Question about Moen & Posi-Temp Single Handle Shower Or Tub Valve
Only hot water cold side no flow Daughter home from college tub /shower in this bath is rarely used. Pulled cover off and checked the flow vave on each side of mixer. both are on , but still no cold water. Could valve be clogged. Cold water in sink and commode are OK
The Moen Posi-Temp Valve is a pressure balanced valve and when not used for long periods of time they can stick causing only cold or hot water to pass through the valve.
A New Posi-temp cartridges can be purchased at most plumbing supply houses or big box outlets such as Lowes or Home Depot.
As long as you had cold water before, a new cartridge will solve the problem. In the future it would be wise to occassionally operate the valve at least a couple of times a month in order to keep the pressure assembly from becoming lodged in position. Just follow the instructions included with the new cartridge on the proper removal of the old cartridge and the installation of the new cartridge. a little silicone grease inside of the valve before installing the new cartridge will also help.
Be sure that there is no particles of the old cartridge left in the valve.
Posted on Dec 27, 2008
The spool valve, not the cartridge, causes this. It is the large plug with a screwdriver slot just to the right of the main control handle and cartridge.
Posted on Feb 07, 2009
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Posted on Jan 02, 2017
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